Tolong di jawab plis Pakai cara ya​

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Tolong di jawab plis Pakai cara ya​

Tolong di jawab plis Pakai cara ya​

Jawaban:

2x + 5 + 57 = 180

2x + 62 = 180

2x = 118

x = 59°

BDC = 2x + 5 = 2(59) + 5 = 123°